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Pull request overview
This PR adds support for PREBUILD_KERNELS modes 2 and 3 to provide more granular control over which kernels are prebuilt during installation. The change allows users to specify different levels of kernel prebuilding by setting the PREBUILD_KERNELS environment variable to 1, 2, or 3, with each mode excluding different sets of operations.
- Introduces two new prebuild modes (2 and 3) with different kernel exclusion patterns
- Mode 2 excludes backward operations and batch prefill while building forward operations
- Mode 3 appears to build all kernels (all operations commented out in exclusion list)
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valarLip
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Nov 28, 2025
farlukas
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Dec 4, 2025
* add fmha to prebuild * More PREBUILD_KERNELS Option --------- Co-authored-by: zufayu <zufayu@amd.com>
nsusanto
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Dec 4, 2025
* add fmha to prebuild * More PREBUILD_KERNELS Option --------- Co-authored-by: zufayu <zufayu@amd.com>
zhuyuhua-v
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Dec 17, 2025
* add fmha to prebuild * More PREBUILD_KERNELS Option --------- Co-authored-by: zufayu <zufayu@amd.com>
valarLip
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Mar 18, 2026
* add fmha to prebuild * More PREBUILD_KERNELS Option --------- Co-authored-by: zufayu <zufayu@amd.com>
valarLip
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Mar 18, 2026
* add fmha to prebuild * More PREBUILD_KERNELS Option --------- Co-authored-by: zufayu <zufayu@amd.com>
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Motivation
add more PREBUILD_KERNELS option for prebuild kernel so
Technical Details
PREBUILD_KERNELS == 1/2/3
ex:
PREBUILD_KERNELS=1 GPU_ARCHS="gfx942;gfx950" python3 setup.py install
Test Plan
308/355
Test Result
Submission Checklist